Wendy Nelson, whose mother died from Alzheimer’s disease and father

Wendy Nelson stands at Uhuru Peak of Mt. Kilimanjaro, the highest point on the continent of Africa, during a climb to raise funding for cancer research, a bucket list trip she took after a genetic test showed that she carries two copies of the APOE4 gene variant that significantly increases her risk for Alzheimer’s disease, in Tanzania, February 17, 2023. Brian Gallagher/Handout via REUTERS